Did you know an anime movie called
Penguin's Memory: Shiawase Monogatari exists? And it looks like this:
Literally one of the best quality uploads of the coverIt was released in
1985, and is about a penguin soldier Mike
Pence Davis who returns home after being injured during combat. His family and friends prefer to stay away from him, however, so he leaves his hometown and roams around the country.
I dunno what happens next, but you can find out yourself.
Here are the
two most informative sites I could find regarding this movie. Dunno if it's safe to give a link to watch it online here.